Finding the Fourth Proportional to 12,748.72, 17,594.04 and 7,160.08

Step by Step Solution

1. Step 1: Write the proportion equation
   12,748.72 : 17,594.04 = 7,160.08 : x
2. Step 2: Convert to fraction form
   12,748.72/17,594.04 = 7,160.08/x
3. Step 3: Cross multiply
   12,748.72x = 17,594.04 × 7,160.08
4. Step 4: Simplify right side
   12,748.72x = 125,974,733.92
5. Step 5: Solve for x
   x = 125,974,733.92/12,748.72
6. Step 6: Final answer
   x = 9,881.36